The boll development and formation of "Kemian 2" with high quality was studied in this paper.
以高品质棉“科棉2号”为材料，研究高品质棉的棉铃发育及形成规律。
This paper discusses the features of development and formation of the Pearl River System, based on plate theory and arcuate structure.
本文根据大地弧形构造及板块理论研讨珠江水系的发育、形成特点。
This paper discusses the features of development and formation of the Pearl River System, based on plate theory and arcuate structure.
本文根据大地弧形构造及板块理论研讨珠江水系的发育、形成特点。
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